Multilevel CFA with ordinal variables PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
Message/Author
 Luwis Diya posted on Wednesday, June 23, 2010 - 11:25 am
I am trying to fit a Multilevel CFA with ordinal variables and I am always getting the message that the system is running out of memory. Are there ways to overcome this?
 Linda K. Muthen posted on Wednesday, June 23, 2010 - 12:52 pm
It sounds like you have have several dimensions of integration. You can try using the WLSMV estimator instead of maximum likelihood which is the default.
 Md Zabir Hasan posted on Thursday, June 07, 2018 - 10:38 pm
I am running a two-level CFA with 6 binary and 6 ordinal indicators and receiving this error:

THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES COULD NOT BE
COMPUTED. THE MODEL MAY NOT BE IDENTIFIED. CHECK YOUR MODEL.
PROBLEM INVOLVING THE FOLLOWING PARAMETER:
Parameter 64, %BETWEEN%: [ SCF$1 ]
THE CONDITION NUMBER IS 0.114D-13.

Is there any reason why the tow level model is not identifiable? This the model input.

VARIABLE:
NAMES = psu Sex randsex GMB CA CAD SSE SSF SSI TRUSTL TRUSTN TRUSTS SCR SCSB SCF;
USEVARIABLES = GMB CA CAD SSE SSF SSI TRUSTL TRUSTN TRUSTS SCR SCSB SCF;
CATEGORICAL = GMB CA CAD SSE SSF SSI TRUSTL TRUSTN TRUSTS SCR SCSB SCF;
CLUSTER = psu;
USEOBSERVATION = (Sex EQ 2);
Missing are all (999);

Analysis:
TYPE = TWOLEVEL;
Estimator = WLSM;

MODEL:
%WITHIN%
fw1 BY GMB* CA CAD;
fw2 BY SSE* SSF SSI;
fw3 BY TRUSTL* TRUSTS TRUSTN;
fw4 BY SCR* SCSB SCF;
fw1@1 fw2@1 fw3@1 fw4@1;

%BETWEEN%
fb1 BY GMB* CA CAD;
fb2 BY SSE* SSF SSI;
fb3 BY TRUSTL* TRUSTS TRUSTN;
fb4 BY SCR* SCSB SCF;
fb1@1 fb2@1 fb3@1 fb4@1;
 Bengt O. Muthen posted on Friday, June 08, 2018 - 1:34 pm
Perhaps that threshold estimate has an extremely large value.

If this doesn't help, send your output to Support along with your license number.
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